1. (1) Every S corporation that has Montana source income must file a Form CLT-4S, Montana S Corporation and Composite Information Return, on or before the 15th day of the third month following the close of its annual accounting period.
2. (2) A six-month extension of time to file an S corporation return is automatically allowed if any tax, penalties, and interest due are paid on or before the date the return is filed.

3. (3) An S corporation required to file a Montana S corporation information return is subject to a late filing penalty if:

   1. (a) the Montana S corporation information return is not filed by the due date (including extensions);
   2. (b) a copy of the S corporation's federal return is not filed with the Montana S corporation information return; or

   3. (c) a return is filed that does not include the following information:

      1. (i) name, address, and social security or federal identification number of each shareholder;
      2. (ii) the S corporation's Montana source income;
      3. (iii) each shareholder's pro rata share of separately and nonseparately stated Montana source income, gain, loss, deduction, or credit, or item of income, gain, loss, deduction, or credit; and
      4. (iv) each shareholder's pro rata share of separately and nonseparately stated income, gain, loss, deduction, or credit, or item of income, gain, loss, deduction, or credit from all sources.

Authorizing statute(s): 15-1-201, 15-30-2620, 15-31-501, MCA

Implementing statute(s): 15-30-2602, 15-30-2603, 15-30-3302, 15-30-3311, 15-30-3312, 15-31-101, 15-31-111, MCA

History: NEW, 2002 MAR p. 3708, Eff. 12/27/02; AMD, 2010 ARM p. 174, Eff. 1/15/10; AMD, 2013 MAR p. 428, Eff. 3/29/13; AMD, 2017 MAR p. 2094, Eff. 11/10/17.